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• W2747776345 endingPage "e1005637" @default.
• W2747776345 startingPage "e1005637" @default.
• W2747776345 abstract "Surgery is a therapeutic option for people with epilepsy whose seizures are not controlled by anti-epilepsy drugs. In pre-surgical planning, an array of data modalities, often including intra-cranial EEG, is used in an attempt to map regions of the brain thought to be crucial for the generation of seizures. These regions are then resected with the hope that the individual is rendered seizure free as a consequence. However, post-operative seizure freedom is currently sub-optimal, suggesting that the pre-surgical assessment may be improved by taking advantage of a mechanistic understanding of seizure generation in large brain networks. Herein we use mathematical models to uncover the relative contribution of regions of the brain to seizure generation and consequently which brain regions should be considered for resection. A critical advantage of this modeling approach is that the effect of different surgical strategies can be predicted and quantitatively compared in advance of surgery. Herein we seek to understand seizure generation in networks with different topologies and study how the removal of different nodes in these networks reduces the occurrence of seizures. Since this a computationally demanding problem, a first step for this aim is to facilitate tractability of this approach for large networks. To do this, we demonstrate that predictions arising from a neural mass model are preserved in a lower dimensional, canonical model that is quicker to simulate. We then use this simpler model to study the emergence of seizures in artificial networks with different topologies, and calculate which nodes should be removed to render the network seizure free. We find that for scale-free and rich-club networks there exist specific nodes that are critical for seizure generation and should therefore be removed, whereas for small-world networks the strategy should instead focus on removing sufficient brain tissue. We demonstrate the validity of our approach by analysing intra-cranial EEG recordings from a database comprising 16 patients who have undergone epilepsy surgery, revealing rich-club structures within the obtained functional networks. We show that the postsurgical outcome for these patients was better when a greater proportion of the rich club was removed, in agreement with our theoretical predictions." @default.
• W2747776345 created "2017-08-31" @default.
• W2747776345 creator A5000621191 @default.
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• W2747776345 date "2017-08-17" @default.
• W2747776345 modified "2023-10-15" @default.
• W2747776345 title "An optimal strategy for epilepsy surgery: Disruption of the rich-club?" @default.
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• W2747776345 doi "https://doi.org/10.1371/journal.pcbi.1005637" @default.
• W2747776345 hasPubMedCentralId "https://www.ncbi.nlm.nih.gov/pmc/articles/5560820" @default.
• W2747776345 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/28817568" @default.
• W2747776345 hasPublicationYear "2017" @default.
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